His debut single, "One Time", released worldwide in 2009, charted in the top 30 in over ten countries. His debut release, My World, followed on November 17, 2009, and was eventually certified platinum in the United States. He became the first artist to have seven songs from a debut album chart on the Billboard Hot 100.[11] His first full studio release, My World 2.0, was released on March 23, 2010 and has since received similar success; it debuted at number one and within the top ten of several countries and was certified platinum in the United States. It was preceded by the worldwide top-ten single, "Baby," in January 2010.